Download Section- Introduction and General Information

Power Grid Corporation of India Ltd.
Volume II - Technical Specifications for Communication System Package under
“Establishment of Fibre Optic Communication System in lieu of existing ULDC Microwave links in North Eastern Region”
The tasks during the planned site visits for the system include but are not limited to
following:








Visual inspection of equipment
Alarm measurement verification
Status report of site
Updating of log records
Cleaning the equipment
Tightening of connectors
Sealing of cabinets to arrest entry of rodents etc.
Measurement of earth resistance
Work to be taken up during semi-annual site visits is given in enclosed Format.
Fault/Breakdown maintenance is a process of fault correction / trouble
shooting/interfacing with other contractor (for data & Speech connectivity of existing
RTUs & EPABXs etc.) as per the fault reported by NMT. Contractor will maintain a log
of activities carried out at all locations and necessary History will include site name, visit
date, actions taken and site condition. Detailed report in this respect shall be submitted by
the contractor in the monthly meeting.
The representatives of POWERGRID/ Constituents will associate in trouble shooting,
change of unit as per programme notified/intimated by the contractor however, due to any
reason if POWERGRID/ Constituents cannot depute their representative, contractor will
proceed for the work so as to attend the breakdown/testing as per their programme.
The scope of corrective maintenance is as follows:





Troubleshooting on a network element and its interfaces as and when required
and directed by NMT, engineer/coordinator of POWERGRID.
Diagnostics on interfaces to locate problems in network elements. If required, the
contractor shall depute maintenance engineer for joint inspection with other
vendors for pin-pointing the fault.
Identification of the faulty hardware unit, replacing it.
Performance of function verification in co-ordination with the NMT operators
Handing over of faulty unit to constituent/POWERGRID at site or RLDC.
MAINTENANCE OF DC POWER SUPPLY SYSTEM
(DCPS includes charger, Batteries, DCDB and other associated cables/connectors,
Meters, relays,switches, surge protection devices etc.)
The Contractor shall carry out both preventive and break down maintenance of the
supplied DCPS & Battery System.
Section-07
Page 12 of 30